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Health | Diseases & Conditions | Infectious Diseases

Bird flu, malaria, plague and West Nile virus are infectious diseases we've all heard of. Find information on these epidemics and more in this section.

 How does a virus behave in the body?

In general, people are at their most contagious approximately three days after having been exposed to a virus. You can learn more about how a virus behaves in the body from this article. See more »

 How does the flu spread?

Flu season in North America usually begins in November and runs until March. Learn more about how the flu spreads from this article. See more »

 Is there a SARS vaccine?

Is there a SARS vaccine? Visit HowStuffWorks to learn if there is a SARS vaccine. See more »

 Where did SARS come from?

Where did SARS come from? Visit HowStuffWorks to learn more about the origins of SARS from this article. See more »

 Where are high risk SARS areas?

Where are high risk SARS areas? Visit HowStuffWorks to learn more about the high risk SARS areas from this article. See more »

 Does SARS have an effect on white blood cells?

Visit HowStuffWorks to learn more about how SARS affects white blood cells from this article. See more »

Top 10 Eradicable Diseases

 Top 10 Eradicable Diseases

Here are 10 eradicable diseases on the brink of extinction thanks to breakthroughs in science. Check out 10 eradicable diseases at See more »

Mysterious Bacteria Quiz

 Mysterious Bacteria Quiz

Bacteria exists in a variety of forms and can either help or harm your health. Take this bacteria quiz to test your knowledge of bacteria. See more »

How do infections go airborne?

 How do infections go airborne?

How do infections go airborne? Learn about the science behind how infections hang in the air and how exactly infections go airborne. See more »

5 Ways to Prevent Swine Flu

 5 Ways to Prevent Swine Flu

Do you know how to prevent swine flu? Learn about the best ways to avoid getting swine flu with our list of five ways to prevent swine flu. See more »